Flottring-mill



E. & J. M. CLARK.

IVIiH Bolt.

Patented June 6, 1854.

No. `A-11,015.

EDWIN CLARK AND JAS. M.`"GL`AUR`K, OIf` LANCASTER, PENNSYLVANIA.

. FLOHURINGVIILL.

Specification of Letters Patent No.` 11,015, dated J une 6, 1854.

To `all whom t mag/concern Beit known `we, EowiN CLARK and JAMES M. CLARK, Vof Lancaster, Lancaster county, Pennsylvania, have invented certaink new and useful Improvements in Flour- `Mills, of whichthe Afollowing is full description, referencebeing had to the accom` panying drawings.

F'gure 1, isa side elevation of the whole mill. `v`Fig. 2, an interior view, showing the:y conveyer for the middlings and the end of the bolt or sifter, andthe delivery spouts for ship stuff and `bran.`

The hopper and shoe not requiring to be` shown here areas usual 1n mills, and also` The casing or concave (o) 1s the stones. also of the usualconstruction. There is an endless screw (b) upon the spindlegearing into the intermediate shaft and from` this shaft the pov'ver taken off by the driv` ing wheel (C). The main shaft (C) car` ries the bolt (70,) (1,) and the elevators (f), (f), by means of belts (d,) (d) the elevator belts (f) lying over the belts (d), (cZ) and passing around the lower drums (g) (g). The shaft of these lower drums carry the conveyers (P,) and (z'). The upper conveyer (z') being carried by belt (am) but this conveyer may be driven `by a belt from the bolt shaft or by gearing with the same.

The step (25,) carries a cup (y,) for the foot or pivot of the spindle (6,), which cup moves freely, in a vertical line, but is restrained from turning by means of a pin or rib working in the slot The cup (y,) is raised and lowered by the screw (0.0,) which is worked by large gear-wheel (zz/1,) and pinion or trundle The object of this part of the invention is to pre-' serve the parallelism of the stones, which is a point of great consequence to be observed in milling. In adjusting the stones to compensate for their wear, or to grind fine or coarse, or damp or dry grain, the raising of the step is often attended with a slight tilting of the stones and a great loss in the operation; but by my contrivance, the step cup cannot work out of the vertical line, and the stones are kept parallel.

The course of the Hour and material through the mill is as follows: On leaving the stones the material passes down spout (1g) into the boX- or receptacle (r,) is taken the trough of conveyer (71,). In its passage through this trough it is cooled by exposure to the air and by agitation from the conveyer. It is thence delivered to the bolt through spout (c,). The finer portions of the flour pass through the part of the bolt marked (/c,) and the coarser portions through that end marked (71,) and the bran out atthe open end of the bolt beyond (Z,). The liner `port-ions, that is, the eXtra fine Hour the super fine 7, and the fine flour or fine middlings as it is sometimes called, fall upon the conveyer (01,) within the wall orpartition (n,). The `middlings fall upon the other side of partition (MQ) upon` conveyer (p), the shipstul' falls into .division (p) and the bran into division (0'). 1 2, 3, 4, 5, 6, 7, are spouts forthe delivery of the various qualities of stuff, and each one of theseis opened and closed by means of slide valves or shutters (m,) (m,) etc. It will be readily seen that by opening and closing in various ways the slides of l, 2, 3,

A, the eXtra-line, superiine and fine or fine middlings may be had separately or in various degrees of admiXture, or that by closing them all, the two kinds maybe carried through the. tube (o) by (a), and delivered into receptacle (r) from it will be taken along with the material direct from the mill, by elevators (g) and returned to the bolt to be resifted. Or by opening a part and closing a part of slides (m) (m) (m) (m) of spouts of l, 2, 3 4; any of the desired admixtures of flour may be carried over as just now stated to be resifted.

The mid'dlings falling upon conveyer (p) which is attached to the outside of tube (0) may be carried by this conveyer into receptacle (r2) by closing slide (m) to spout (5) or by opening this slide they may be run out at spout (5) when the middlings are carried into receptacle (r2) they are raised by elevators (g), delivered into spout (j) and carried back into the eye of the mill stone to be ground over again. The ship-stuff from the -bolt falling into division (p) is run out through spout 6 Fig. 2. The bran coming out at the end ofthe sieve falls into division (o), and is run out at spo-ut (7) Fig. 2. A portion of the bran however flies ofl' from the sieve and is caught by spout (s) which conducts it into receptacle (r) from which it is taken up by the elevators (g) and carried thence into the bolt for the purpose of keeping the bolt clean by its operated at t-he expense of power and ma-l terial, 1n consequence of extension intermediate gearing. By our arrangement of these several parts we have made a very compactand' convenient mill, and one possessed of numerous capabilities, By gearing the bolt as directly as possible to the mill spindle, we effect a great saving of room; and by introducing the elevato-rs between the bolt and the mill, andintroducing the material at that end of the bolt farthest from the mill, and arranging the carrying and returning conveyers above and below the bolt, and parallel to each other, or nearly so, as shown distinctly in the drawings, we have produced the whole mill within convenient rectangular limits, with the eX- ception of the casing for the elevators, which of necessity projects somewhat above the other parts. As a consequence of this are rangement the flour is subjected to an eX- tensive cooling influence in its passage up the elevator (g,) and through the trougli (it) but more particularlythrough the conveyer (i).

What we claim as our invention is:

1. The double conveyer for the fine flour and middlings, constructed substantially as described, to wit, the conveyer for the middlings being attached to a tube inclosing the conveyer for the fine flour, the conveyer for the fine flour terminating in the receptacle (r) and that for the middlings terminating in receptacle (r2), and in combination with this double conveyer we claim the arrangement of the receptacles (r) (r2), elevators (g) (g) spouts (h) and (j) for returning the ine flour and middlings respectively to the bolt and the eye of the mill, as set forth.

2. We claim the arrangement in series of spouts 1, 2, 3, 4, 5, with their slide valves in combination with the separate receptacles and conveyers (n) and (p).

EDWIN CLARK. JAMES M. CLARK.

Witnesses: c

J FRANKLIN REIGART, JOHN M. AMURG. 

